The correct answer is:
Option A: to make his use of verbal irony more effective
The adjective is bumpy hope i helped
1. an air of melancholy surrounded him
2. an air of melancholy surrounded him
3. the decree guaranteed freedom of assembly
4. Rose's parents emigrated to Australia
5. the patriots had to capitulate to the enemy forces
7. all ivory trafficking between nations is prohibited
8. they offer sacrifices to the spirits